feat: improve manual QTF heading control

docs/PROJECT_CONTEXT.md

@@ -208,6 +208,7 @@ CR/LF framing, XML framing, ports/transports, callsign normalization and frequen
 - The lower selected-station panel contains a vertical two-pane `SplitterPane`: the upper pane owns the independently scrollable message table, while the lower pane scrolls NOT-QRV and Sked above a pinned lookup group. The lower pane reserves 160 dp before stored divider positions are applied, so normal small-window layouts retain direct access to lookup actions; impossible smaller layouts keep the action groups scrollable. `GUIselectedCallSignSplitPane_dividerposition` persists this divider through the existing profile-scoped layout autosave. Station or message updates never reset it. Empty `DataTableView` instances retain their header and border and show an explicit empty-state label. Header metadata and message filters use width-aware flow layouts; the NOT-QRV and sked groups switch between a row and a column from the panel's actual Compose constraint, without duplicating their domain state.
 - The selected-station sked picker takes its options exclusively from `MainWindowState.activeBands`, which originates in `BandOpportunityResolver.getEnabledStationBands(...)`. Station QRG and name evidence chooses the initial band but must not empty or narrow the operator's locally enabled choices. The detected-band header value is already localized and labelled by its producer, so the Compose panel renders it unchanged.
 - Compact desktop buttons, text fields, choices and checkbox rows share `Density.CONTROL_HEIGHT` at 26 dp and `compactControlTextStyle()`. Material touch-target and component defaults must not reintroduce different visible heights. Compass filter buttons keep a common 28 dp width with reduced horizontal content padding; the send-row QRG fields reserve 96 dp and QTF fields 56 dp so normal contest values remain visible. The station filter bar groups related controls on shared theme surfaces while its outer flow rows continue to wrap from the station pane's actual width.
+- `actualQTF` is initialised once from the active profile's `stn_qtfDefault` after preferences are read. Later PSTRotator feedback or manual runtime changes replace that value without changing the stored default, and a repeated preferences read must not overwrite a live heading. Manual QTF-heading transfer is enabled by default and persisted as the profile-scoped opt-out marker `stn_qtfFilterDirectionAsAntennaHeadingOptedOut`; absence of that marker migrates root and operator profiles to enabled, while subsequent writes preserve an explicit opt-out. The effective state is `!stn_pstRotatorEnabled && !optedOut`: PSTRotator 1 temporarily suspends transfer without erasing the user's choice, and PSTRotator 2 remains independent. Explicit QTF field entries and compass-button actions route directly to `actualQTF`, even when the QTF predicate is off; filter reset, checkbox changes and restored filter state never take that route. The coupling is one-way and never calls the rotor command path.
 
 ## Autoanswer / Beacon